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| Mirrors > Home > MPE Home > Th. List > vsnid | Structured version Visualization version GIF version | ||
| Description: A setvar variable is a member of its singleton. (Contributed by David A. Wheeler, 8-Dec-2018.) |
| Ref | Expression |
|---|---|
| vsnid | ⊢ 𝑥 ∈ {𝑥} |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | vex 3458 | . 2 ⊢ 𝑥 ∈ V | |
| 2 | 1 | snid 4623 | 1 ⊢ 𝑥 ∈ {𝑥} |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∈ wcel 2147 {csn 4588 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-ext 2735 |
| This proof depends on definitions: df-bi 210 df-an 402 df-tru 1573 df-ex 1813 df-sb 2102 df-clab 2742 df-cleq 2755 df-clel 2839 df-v 3456 df-sn 4589 |
| This theorem is used by: exsnrex 4641 rext 5420 unipw 5422 xpdifid 6170 xpdifcnvepel 6171 opabiota 6987 fnressn 7183 fressnfv 7185 snnex 7793 frrlem12 8340 frrlem14 8342 mapsnd 8939 funen1cnv 9081 findcard2d 9207 ac6sfi 9300 iunfi 9357 elirrvOLDOLD 9617 kmlem2 10254 fin1a2lem10 10511 hsmexlem4 10531 iunfo 10647 modfsummodslem1 15985 lcmfunsnlem2lem1 16839 coprmprod 16862 coprmproddvdslem 16863 c0snmgmhm 20719 lbsextlem4 21466 frlmlbs 22130 coe1fzgsumdlem 22648 evl1gsumdlem 22701 maducoeval2 22982 dishaus 23727 dis2ndc 23806 dislly 23843 dissnlocfin 23875 comppfsc 23878 txdis 23978 txdis1cn 23981 txkgen 23998 isufil2 24254 alexsubALTlem4 24396 tmdgsum 24441 dscopn 24919 ovolfiniun 25849 volfiniun 25895 jensen 27343 uvtx01vtx 30005 cplgr1vlem 30037 unidifsnel 33200 gsumpart 33691 dflring3 34096 mplidomlem 34226 vieta 34279 extdg1id 34365 irngss 34386 esum2dlem 34791 bnj1498 35758 fineqvnttrclselem2 35889 wevgblacfn 36038 cvmlift2lem1 36233 elpssmo 36635 funpartlem 36883 ttcid 37457 topdifinffinlem 38461 fvineqsneq 38526 pibt2 38531 finixpnum 38719 mbfresfi 38775 pclfinN 41148 sn-iotalem 43466 mzpcompact2lem 43953 dvmptfprod 47158 fourierdlem48 47367 sge0sup 47604 funressnvmo 48318 dfclnbgr6 49157 dfsclnbgr6 49159 termco 50819 termcarweu 50866 diag1f1o 50872 diag2f1o 50878 |
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